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OBJECTIVE To prepare berberine hydrochloride microemulsion gel patch to improve the in vitro transdermal penetration and relative bioavailability in vivo. METHODS Firstly, through the screening of microemulsion dressing materials, and using the central point design response surface optimization method to optimize the microemulsion prescription, the best microemulsion prescription was obtained. The morphology and particle size of microemulsion were investigated by laser particle size analyzer and transmission electron microscope. Secondly, the matrix was selected for the gel paste, and then the optimal design of the gel paste was obtained by using the star design response surface optimization method. Finally, the microemulsion was added to the gel paste to prepare the berberine hydrochloride microemulsion gel paste, and the prescription process was verified. Through the in vitro transdermal test of mice, by comparing the permeation promoting effect of different concentrations of zzone, draw the cumulative permeation amount time curve of azone with different concentrations, and select the best amount of Azone. Finally, pharmacokinetic studies in rats and pharmacodynamic studies in mice were conducted. RESULTS Berberine hydrochloride microemulsion gel paste was successfully prepared. The best formulation of microemulsion was oil phase-emulsifier-co-emulsifier=0.11∶0.6∶0.3. The morphology and particle size of microemulsion were investigated by laser particle size analyzer and transmission electron microscope. The results showed that most microemulsion morphology was round, regular spherical, no aggregation, and the particle size was appropriate. The best prescription of gel paste NP700∶glycerol-dihydroxyaluminum aminoacetate=2.3∶17.5∶0.1 aluminum glycinate. The results of in vitro skin penetration test showed that azone with a mass fraction of 3% had the best penetration promoting effect. Pharmacokinetics showed that berberine hydrochloride microemulsion gel patch could prolong the action time in vivo. Preliminary pharmacodynamics shows that the drug can effectively improve the skin lesions, obviously inhibit the increase of inflammatory factors and improve the pathological tissue. CONCLUSION Microemulsion combined with gel patches can be used to prepare microemulsion gel patch with high drug loading and good therapeutic effect. The preparation of berberine hydrochloride microemulsion gel patch can effectively improve the bioavailability of berberine hydrochloride through percutaneous absorption.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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